function shouldBe(actual, expected) | |
{ | |
if (actual !== expected) | |
throw new Error('bad value: ' + actual); | |
} | |
class Trace { | |
constructor() | |
{ | |
this.__count = 0; | |
} | |
trace() | |
{ | |
this.__count++; | |
} | |
get count() | |
{ | |
return this.__count; | |
} | |
} | |
for (var i = 0; i < 10000; ++i) { | |
var t0 = new Trace(); | |
shouldBe(t0.count, 0); | |
var y = {set 2(x) { t0.trace() }}; | |
shouldBe(t0.count, 0); | |
y[2] = 5; | |
shouldBe(t0.count, 1); | |
} |